#demo1{
	/* border: 1px solid red; */
	width: 500px;
	background-color: #EDEDED;
	padding: 20px;
}

#demo1>div{
	
	height: 40px;
	line-height: 40px;
}

#demo1 label{
	display: inline-block;
	/* border: 1px solid blue; */
	width: 80px;
	text-align: right;
}

#id{
	width: 340px;
}

#birthday,#age{
	width: 120px;
}